50 ! which examples describe how a plant might meet the challenge of getting and using energy? choose all answers that are correct. a. in a forest, trees grow tall and branches grow long to get enough sunlight. b. a cactus has spines to ward off predators. c. leaves on trees turn green in the spring due to increased sunlight, which allows for photosynthesis. d. potato plants store food in underground potatoes for use when necessary..

According to this food web which of the following would be considered primary consumers

Aresearcher designed an investigation to test what effect eating different types of food would have on blood insulin levels. she selected 10 male subjects who were all 25 years of age and in good health. the experiment took place over 3 days. at 8: 00 a. m. on each day, the subjects ate a meal consisting of only 1 type of food. they had their blood insulin levels measured after consuming the meal. on day 1 they ate a high fat diet, on day 2 they ate a high protein diet, and on day 3 they ate a high sugar diel what is the independent variable in this experiment? a the age of the subjects b the blood insulin level c the type of food consumed d the time of day the meal was consumed

The frequency of alleles in a population that is in hardy weinberg equilibrium? a . changes in each successive generation b. is less important than the frequency genotypes c. shows evidence of the process of natural selection d. remains the same over several generations